Physics, 13.08.2020 18:01 abelxoconda
A scientist used a laboratory model to test the effect of radiation, or the sun, in heating land and water on Earth. To do this experiment, 200 mL of water and dry sand were placed in to 2 separate 250-mL beakers. Each beaker was then placed under the same lamp. Temperature readings were taken of each substance every 2 minutes for 8 minutes. Use the data table to answer the following questions. Substance Heated Starting Temp (°C) 2 min 4 min 6 min 8 min Water 18 18.5 19.5 21 22 Dry Sand 18 20 22 24 26 Is this a controlled experiment? Explain
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An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?
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The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?
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Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?
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What word chemical equation describes cavendish’s experiment with zinc?
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